Overview

overview

10

Static

static

RFQ_072-756.exe

windows7_x64

10

RFQ_072-756.exe

windows10_x64

3

Analysis

  • max time kernel
    137s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    21/07/2020, 06:36

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General

  • Target
    RFQ_072-756.exe
  • Size 556KB
  • Sample200721-9j7pledjes
  • SHA256 45d2b537d6257e582b1a4acc8d914abb211a4c75241740c21679f10e2c8c8d76
  • MD5 SHA1 SHA512
Score
10/10
agentteslaevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

  • agenttesla

Credentials
  • Protocol

    smtp
  • Host

    mail.actionassist.co.uk
  • Port

    587
  • Username

    [email protected]
  • Password

    benjamin76

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 4 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spyware
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spyware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ_072-756.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ_072-756.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1324
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dKGxhaJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp908B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:572
    • C:\Users\Admin\AppData\Local\Temp\RFQ_072-756.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/892-4-0x0000000000400000-0x000000000044C000-memory.dmp
        Download

        memory/892-6-0x0000000000400000-0x000000000044C000-memory.dmp
        Download

        memory/892-7-0x0000000000400000-0x000000000044C000-memory.dmp
        Download